Energy & Oil Prices - Source Bloomberg -September 15,2011

Energy & Oil Prices OIL ($/bbl) PRICE* CHANGE % CHANGE TIME Nymex Crude Future 89.95 1.04 1.17% 10:17 Dated Brent Spot 114.79 3.25 2.91% 10:28 WTI Cushing Spot 89.65 0.74 0.83% 09:18 OIL (¢/gal) PRICE* CHANGE % CHANGE TIME Nymex Heating Oil Future 302.45 7.95 2.70% 10:17 Nymex RBOB Gasoline Future 278.69 6.11 2.24% 10:17 NATURAL GAS ($/MMBtu) PRICE* CHANGE % CHANGE TIME Nymex Henry Hub Future 4.01 -0.03 -0.79% 10:16 Henry Hub Spot 4.01 0.08 2.04% 09/14 New York City Gate Spot 4.28 0.02 0.47% 09/14 ELECTRICITY ($/megawatt hour) PRICE* CHANGE % CHANGE TIME Mid-Columbia, firm on-peak, spot 30.45 0.35 1.16% 09/14 Palo Verde, firm on-peak, spot 38.73 0.85 2.24% 09/14 BLOOMBERG, FIRM ON-PEAK, DAY AHEAD SPOT/ERCOT HOUSTON 53.94 -6.19 -10.29% 09/14 *Commodity futures and energy prices are in U.S. dollars.